新型炭材料2017，Vol.32Issue(5)：419-426,8.
氮掺杂炭层包覆碳纳米管的组织结构调控及其氧还原催化活性
Nitrogen-doped carbon coatings on carbon nanotubes as efficient oxygen reduction catalysts
摘要
Abstract
Polypyrrole-coated carbon nanotubes ( PPy-CNTs ) synthesized by an in-situ chemical polymerization approach were heat-treated at 600, 800 and 1000 ℃ in N2 to prepare N-doped carbon coatings on CNTs (NC-CNTs). The specific surface area ( SSA) and pore volume of the NC-CNTs increase significantly with heat treatment temperature and the nitrogen content decreases. Also, as the temperature increases the content of pyrrolic-N decreases while that of the graphitic-N increases. The SSA and pore vol-ume of the NC-CNT1000 are 3 and 1. 7 times higher than those of the NC-CNT600. As metal free electrocatalysts, the NC-CNTs show significant ORR activity in a basic electrolyte, but it is not proportional to their total nitrogen content. The ORR mechanism of the NC-CNT600 and NC-CNT800 belongs to a two-electron transfer reaction while that of the NC-CNT1000 to a mixture of the two-electron and four-electron transfer reactions. The NC-CNT1000 exhibits the best ORR activity and durability among the samples ow-ing to its highest SSA and pore volume as well as having the largest amount of graphitic-N.关键词
氮掺杂/碳纳米管/氧还原/氮官能团Key words
Nitrogen doping/Carbon nanotubes/Oxygen reduction/Nitrogen containing functional groups分类
化学化工引用本文复制引用
李莉香,赵宏伟,邢天宇,耿新,宋仁峰,安百钢..氮掺杂炭层包覆碳纳米管的组织结构调控及其氧还原催化活性[J].新型炭材料,2017,32(5):419-426,8.基金项目
国家自然科学基金(51672117, 50801035) （51672117, 50801035）
辽宁省高校创新团队(LT2014007) （LT2014007）
辽宁省自然科学基金(201502063) （201502063）
辽宁省教育厅资助项目(2016TSZD01).:The project was supported by the National Natural Science Foundation of China (5162117, 50801035) （2016TSZD01）
Innova-tive Research Team in Colleges and Universities of Liaoning Province, China ( LT2014007 ) （ LT2014007 ）
Natural Science Foundation of Liaoning Province, China ( 201502063 ) （ 201502063 ）
Education department of Liaoning Province, China (2016TSZD01). （2016TSZD01）
